Pulley for signal-wires or other purposes.



No. 695,38l. Patented Mar. :1, 1902.

s. T. BUTTON.

PULLEY FOR SIGNAL WIRESUB OTHER PURPOSES.

(Application filed Dec. 6, 1901.)

(No Model THE uonms'pzrza; cc monmruq. WASHINGTON, n. c.

UNITED STATES PATENT Orrrcn,

SAMUEL TELFORD DUTTON, OF W'OROESTER, ENGLAND, ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, TO J. F. PEASE AND COMPANY, LIMITED, OF DARLINGTON,ENGLAND, AND W'OROESTER, ENGLAND, A CORPORATION OF GREAT BRITAIN.

PULLEY FOR SIGNAL-WIRES OR OTHER PURPOSES SPECIFICATION forming part ofLetters Patent No. 695,381, dated March 11, 1902.

Application filed December 6,1901. Serial No. 84,870. (No model.)

To roZZ whom it may concern:

Beit known that I, SAMUEL TELFORD DUT- TON, a subject of the King ofGreatBritain, residing at Marl Bank, in the city and county ofWorcester, England, have invented new and useful Improvements Relatingto Pulleys for Signal-Wires or other Purposes, of which the following isa specification.

In the accompanying drawings, Figure l is a side View, Fig. 1 asectional plan View on line a: o: of Fig. 1, and Fig. 2 a front view, ofa single pulley with the invention applied thereto. Fig. 3 is a sideview showing the application to a triple-pulley frame. Fig. 4 shows inside View a slight modification of the invention and aslightly-different form of frame for single pulley. Fig. 5 shows adoublepulley frame of the same construction, and Fig. 6 an end view ofFig. 3.

This invention relates to those pulleys commonly known as angle-pulleys,used for guiding wires, cords, or the like for the purpose of actuatinga signal or other device at a distance fromthe point of operations andin a curved line. The frames of these pulleys usually hang free from apin carried by lugs which are secured to a post or other support, or areotherwise pivotally secured, so that the pulley will yield to the pullof the wire or swing and assume a more or less angular position,according to the position of the support and the curve of the line.

The lifting of the pulleys from a recumbent or vertical to a workingposition causes loss of travel of. the wire and induces undue wear andstrain on the working wires, which have thus to bear a considerableportion of the weight, if not the entire Weight, of the swinging pulleysand frames.

The object of this invention is to remedy these defects; and theinvention consists in providing meanswhereby the pulleys may be adjustedor fixed at the desired angle, according to the position on the curve.

In carrying out this invention the pulleys are mounted in a hinged orpivoted frame, as usual; but according to this invention the free end ofthe frame is moved intothe desired position and is then fixed in thisposition by a suitable device.

My invention is applicable to all constructions of angle-pulleys; but Ihave shown the invention as applied to the frame formed from strips ofsteel suitably bent into shape, as will hereinafter be more particularlydescribed.

The swinging pulley-frames are carried by brackets, consisting of a baseplate, with countersunk bosses and wings or lugs bent at right angles toreceive the pin or bolt on which 'the frame is hung.

In the drawings, A is the base-plate, B the countersunk bosses, and Othe wings or lugs bent at right angles. The parts are preferablystampedfrom sheet-steel and afterward galvanized.

D is the pin carried by the lugs O, on which the loop or eye E of thepulley-frame E is mounted, as clearly indicated in Figs. 1, 2, and 3.

The pulley-frame E is formed from astrip (or it may be strips) of thinsteel, which will be arranged as shown in the drawings that is to say,referring to Fig. 1, the strip will start at z, with a straight portionof suitable length. It will then be turned back on itself in such a wayas to form the eye or loop E to receive the bolt on which the frame isintended to swing. After running parallel with the straight portion fora short distance the strip is bent outward at nearly a right angle andis then turned downward again a distance equal to and parallel with thestraight part, leaving a space sufficient to form the pulley-recess. Thestrip is next turned inward upon itself and is arched over the pulley toform a guard for the pulley, being brought down again by the side of thestraight portion before named and ending at y.- The frame shown at Figs.4 and 5 will be of similar construction, a slight modification in theform of a second loop E being shown. In Fig. 3 another slightmodification in the manner of producing the frame is shown, which willbe clearly understood from the drawings. In all these cases the archedor guard portion of the pulley-frame E will be indented or nipped in oneach side below the crown of the arch, so as to overlie the edges of thepulley. The shoulder thus formed will be curved to follow the contour ofthe pulley, as shown in the side View, Fig. 6, at E. The object of thusforming the guard is to prevent the signal-wire jumping out of thegroove of the pulley and getting jammed between the pulley and theframe, at the same time leaving ample room ,for the movement of thewire.

In the lugs or wings C is formed series of holes F, which are arrangedaccording to a curve struck from the axis of the pin D, and these holesare set at even distances apart (or it may be radial slots) to receivethe arms of a staple or similar device G, which will straddle the web ofthe loop E of the frame E, (see Fig. 1%) and the frame will thus besecurely held at a desired angle, according to the curve of the line andthe position of the support.

In Figs. 4 and 5 the pulley-frame is formed with two loops or eyes E E,as before mentioned, the loop E to receive the pin D and the loop E toreceive a second pin (solid or split) H, by which the frame can be heldat a desired angle, as clearly indicated in the drawings at Fig. 4.

I would here remark that the constructions above described arepreferable, as being simple and self-contained; but I would have itunderstood that I do not intend to confine myself to the details shown,as these may obviously be varied without departing from the nature ofthe invention.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. An angle or swinging pulley for signalwires and other purposesconsisting of a bracket having lugs pierced to receive a pivotpin andwith a series of openings arranged in a curve struck from the pivot incombination with a pulley-frame formed from a strip of steel with a loopor loops and having an arched guard portion indented or nipped in at apoint below the crown of the arch and corresponding to the contour of agrooved pulley to be contained within the guard portion and a holdingdevice to hold the swinging frame carrying the grooved pulley at anydesired angle with relation to the curved series of openings as hereinshown and described.

2. In angle-pulleys for signal-wires and other purposes, abracket havinglugs pierced to receive a pivot-pin and with a series of openingsarranged in a curve struck from the pivot in combination with a holdingdevice to be inserted in the openings, to hold a pulley-frame swung fromthe pivot at any desired angle as herein shown and described.

In testimony whereof I have signed my name to this specification in thepresence oftwo subscribing witnesses.

SAMUEL TELFORD DUTTON.

Witnesses:

RICHARD EDWIN COPE, V S. E BAYLIs.

